:root {
  color-scheme: light;
  --navy: #06255e;
  --navy-deep: #041a43;
  --ink: #071a3d;
  --ink-soft: #3f4d66;
  --muted: #728098;
  --line: #d5deea;
  --line-soft: #e7edf4;
  --surface: #ffffff;
  --surface-soft: #f6f8fb;
  --red: #c81e3a;
  --green: #138a54;
  --content-width: 1120px;
  font-family: "Inter", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-weight: 400;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 3px solid #89a7db;
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 48px), var(--content-width));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 1;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: min(calc(100% - 48px), var(--content-width));
  min-height: 76px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  line-height: 1;
}

.brand__mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 2px;
  background: var(--navy);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.global-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px 24px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
}

.global-nav__link,
.global-nav__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  white-space: nowrap;
}

.global-nav__link {
  color: var(--navy);
}

.global-nav__link--active {
  font-weight: 600;
}

.status-label {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.35;
}

.hero {
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface);
}

.hero__inner {
  max-width: 920px;
  padding-top: clamp(76px, 11vw, 142px);
  padding-bottom: clamp(80px, 12vw, 152px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: 0.01em;
}

h1 {
  max-width: 800px;
  margin-bottom: 24px;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.38;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.4vw, 38px);
  line-height: 1.35;
}

h3 {
  margin-bottom: 9px;
  font-size: 18px;
  line-height: 1.5;
}

.hero__lead {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 400;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.button--primary {
  background: var(--navy);
  color: #fff;
}

.button--primary:hover {
  background: var(--navy-deep);
}

.button--full {
  width: 100%;
}

.section {
  padding: clamp(70px, 10vw, 120px) 0;
}

.section--index {
  background: var(--surface);
}

.section--soft {
  background: var(--surface-soft);
}

.section-heading {
  max-width: 750px;
  margin-bottom: 52px;
}

.section-heading > p:last-child {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.section-heading--compact {
  margin-bottom: 34px;
}

.index-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 360px);
  gap: clamp(32px, 6vw, 80px);
  align-items: stretch;
}

.index-features {
  display: grid;
  border-top: 1px solid var(--line);
}

.feature-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  column-gap: 16px;
  padding: 21px 0;
  border-bottom: 1px solid var(--line);
}

.feature-item__number {
  grid-row: span 2;
  padding-top: 3px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.feature-item h3 {
  margin-bottom: 4px;
}

.feature-item p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.index-callout {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 31px;
  border: 1px solid #c8d3e2;
  border-top: 4px solid var(--navy);
  background: #fbfdff;
}

.index-callout__kicker {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.index-callout h3 {
  margin-bottom: 24px;
  color: var(--ink);
  font-size: 22px;
}

.index-quote {
  margin: 0 0 20px;
  padding: 17px 0 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.index-quote__label {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.index-quote__label time {
  margin-left: 8px;
}

.index-quote__values {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.index-quote__values strong {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.2;
}

.index-quote__values span {
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
}

.index-quote__values span.is-up {
  color: var(--red);
}

.index-quote__values span.is-down {
  color: var(--green);
}

.index-callout__note {
  flex: 1 1 auto;
  margin-bottom: 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

.future-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--surface);
}

.future-card {
  display: flex;
  flex-direction: column;
  min-height: 248px;
  padding: 30px;
}

.future-card + .future-card {
  border-left: 1px solid var(--line);
}

.future-card__type {
  margin-bottom: 28px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.future-card h3 {
  font-size: 20px;
}

.future-card > p:not(.future-card__type) {
  margin-bottom: 22px;
  color: var(--ink-soft);
  font-size: 14px;
}

.status-label--card {
  align-self: flex-start;
  margin-top: auto;
  padding: 4px 8px;
  font-size: 11px;
}

.about {
  border-top: 1px solid var(--line-soft);
}

.about__inner {
  max-width: 760px;
}

.about__inner > p:last-child {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.site-footer {
  border-top: 1px solid #183867;
  background: var(--navy-deep);
  color: #eaf0fa;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(190px, 0.7fr) minmax(0, 1.45fr) auto;
  gap: 24px 40px;
  align-items: start;
  padding-top: 34px;
  padding-bottom: 34px;
}

.site-footer__brand,
.site-footer__index-link {
  display: block;
}

.site-footer__brand {
  margin-bottom: 10px;
  color: #fff;
  font-size: 17px;
  font-weight: 600;
}

.site-footer__index-link {
  color: #c8d6ed;
  font-size: 13px;
}

.site-footer__index-link:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer__disclaimer,
.site-footer__copyright {
  margin: 0;
  color: #c8d6ed;
  font-size: 12px;
  line-height: 1.7;
}

.site-footer__copyright {
  white-space: nowrap;
}

/* Shared KT Investment site shell */
.investment-header {
  position: relative;
  z-index: 1;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface);
}

.investment-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: min(calc(100% - 48px), var(--content-width));
  min-height: 88px;
  margin: 0 auto;
}

.investment-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  color: var(--ink);
  line-height: 1;
}

.investment-brand__logo {
  display: block;
  width: 220px;
  height: auto;
}

.investment-brand__mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 2px;
  background: var(--navy);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.investment-brand__name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.investment-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px 30px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
}

.investment-nav__link,
.investment-nav__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  white-space: nowrap;
}

.investment-nav__link {
  color: var(--ink-soft);
}

.investment-nav__link:hover,
.investment-nav__link--active {
  color: var(--navy);
}

.investment-nav__link--active {
  font-weight: 600;
}

.investment-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
}

.investment-footer__directory {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 48px;
  align-items: start;
  padding-top: 46px;
  padding-bottom: 44px;
}

.investment-footer__column {
  display: grid;
  align-content: start;
  gap: 8px;
  margin: 0;
}

.investment-footer__title {
  margin: 0 0 7px;
  color: var(--navy);
  font-size: 15px;
  font-weight: 600;
}

.investment-footer__column a,
.investment-footer__column span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.investment-footer__column a:hover {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.investment-footer__column small {
  margin-left: 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
}

.investment-footer__meta {
  border-top: 1px solid var(--line-soft);
  background: var(--surface-soft);
}

.investment-footer__meta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.investment-footer__disclaimer,
.investment-footer__copyright {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.investment-footer__copyright {
  white-space: nowrap;
}

.investment-footer__signature {
  display: grid;
  gap: 2px;
  justify-items: end;
}

.investment-footer__by {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

@media (max-width: 880px) {
  .investment-header__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .investment-nav {
    justify-content: flex-start;
  }

  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .global-nav {
    justify-content: flex-start;
  }

  .index-layout {
    grid-template-columns: 1fr;
  }

  .index-callout {
    max-width: 500px;
  }

  .future-grid {
    grid-template-columns: 1fr;
  }

  .future-card {
    min-height: 0;
  }

  .future-card + .future-card {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .investment-footer__directory {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .investment-footer__meta-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .investment-footer__signature {
    justify-items: start;
  }
}

@media (max-width: 560px) {
  .container,
  .site-header__inner,
  .investment-header__inner {
    width: min(calc(100% - 32px), var(--content-width));
  }

  .site-header__inner {
    min-height: 0;
  }

  .investment-header__inner {
    min-height: 0;
  }

  .investment-nav {
    gap: 6px 14px;
    font-size: 12px;
  }

  .investment-nav__link,
  .investment-nav__item {
    min-height: 26px;
  }

  .investment-brand__logo {
    width: 180px;
  }

  .global-nav {
    gap: 6px 14px;
    font-size: 12px;
  }

  .global-nav__link,
  .global-nav__item {
    min-height: 26px;
  }

  .global-nav__item {
    gap: 4px;
  }

  .status-label {
    padding: 1px 4px;
    font-size: 9px;
  }

  h1 {
    font-size: 32px;
  }

  .hero__lead,
  .section-heading > p:last-child,
  .about__inner > p:last-child {
    font-size: 15px;
  }

  .button {
    width: 100%;
  }

  .feature-item {
    grid-template-columns: 37px minmax(0, 1fr);
    column-gap: 10px;
  }

  .index-callout,
  .future-card {
    padding: 24px;
  }

  .site-footer__inner {
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .investment-footer__directory {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 34px;
    padding-bottom: 34px;
  }

  .investment-footer__meta-inner {
    padding-top: 15px;
    padding-bottom: 15px;
  }
}